As children, our curiosity about what to expect as our bodies change is met with knowledge and patience. But when we're 50 or 60, our bodies undergo other dramatic (and often just as startling) changes - yet there's no one to prepare us, educate us, or provide guidance on what's "normal." From superficial concerns and everyday aches and pains to more serious medical problems, Dr. John Whyte, chief medical expert for the Discovery Channel, cuts through the confusion. In "Is This Normal?" he answers a broad range of questions about the physical effects of aging, such as: How much weight gain is normal as we age - and why is it so hard to lose? Is it normal to sleep less at night and nap more during the day? And, what are the signs of Alzheimer's versus normal memory loss? With compassion, reassurance, and friendly guidance, Dr. Whyte provides both male and female readers with cutting-edge advice for the effects of aging they face every day, from hormones and libido to cancer risk and cardiovascular health. "Is This Normal?" arms readers with the essential knowledge and preventive strategies they need stay healthy and vital for decades to come.